Oil cooled magnetic core store.
If you turned it off in mid go it would restart exactly where it stopped
when you restarted 3 weeks later. 8k in the size of a suitcase - 2 bus bars
(real copper), 2 processors, Dykstra's semaphores to stop "mutual exclusion"
and "deadly embrace" etc. etc. etc.
Oh and 18bits !!!!!!
From: Jeff Scism [mailto:scismgenie@...
Sent: 04 March 2005 18:02
Subject: Re: [NTO] Firefox help
Greg Chapman wrote:
>I remember such monsters well! My first "Data Processing" tutor started
>first lesson by talking about how there were only four people in the world
>who it was reckoned could multiply at the time of that famous census around
>0 BC. (I had total belief after attempting it without mentally converting
>all the Roman numbers to denary!)
>He went on to reminisces about his first programming job, involving a
>of wires and jack plugs, and how no one dared write a program that would
>for more than five minutes, because the computer would certainly blow a
>valve before the sixth minute, totally destroying the job!
>It was only the year before our group that they had given up presenting
>students with a roll of punched tape and telling that that the first
>question in the exam had to be read with the naked eye from it!
I think I came in a bit later, They had Keypunches ( which didn't last long-
thank God) - and magnetic "core" storage.
Disc Storage was a nightmare, and I remember drive disks about 6 inches
thick and a foot or more across, weighed about 75 lbs.
About the time I got proficient in writing Basic, and using the 031 IBM
keypunch, I dropped the program and went into the military.
8 years later PCs came out.
Jeff Scism, IBSSG
Crowley/Croley/Crawley DNA project
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